【正文】 tism refers to a cluster of conditions appearing early in childhood. All involve severe impairments in social interaction, munication, imaginative abilities, and rigid, repetitive behaviors. To be considered an autistic disorder, some of these impairments must be manifest before the age of three. The reference book used by mental health professionals to diagnose mental disorders is the Diagnostic and Statistical Manual of Mental Disorders , also known as the DSM. The 2020 edition of this reference book (the Fourth Edition Text Revision known as DSMIVTR ) places autism in a category called pervasive developmental disorders . All of these disorders are characterized by ongoing problems with mutual social interaction and munication, or the presence of strange, repetitive behaviors,interests, and activities. People diagnosed with these disorders are affected in many ways for their entire lives. Description Each child diagnosed with an autistic disorder differs from every other, and so general descriptions of autistic behavior and characteristics do not apply equally to every child. Still, the mon impairments in social interaction, munication and imagination, and rigid, repetitive behaviors make it possible to recognize children with these disorders, as they differ markedly from healthy children in many ways. Many parents of autistic children sense that something is not quite right even when their children are infants. The infants may have feeding problems, dislike being changed or bathed, or fuss over any change in routine. They may hold their bodies rigid, making it difficult for parents to cuddle them. Or, they may fail to anticipate being lifted, lying passively while the parent reaches for them, rather than holding their arms up in return. Most parents of autistic children bee aware of the strangeness of these and other behaviors only gradually. Impairments in social interaction are usually among the earliest symptoms to develop. The most mon social impairment is a kind of indifference to other people, or aloofness, even towards parents and close caregivers. The baby may fail to respond to his or her name being called and may show very little facial expression unless extremely angry, upset, or happy. Babies with autism may resist being touched, and appear to be lost in their own world, far from human interaction. Between seven and 10 months of age, most infants often resist being separated from a parent or wellknown caregiver, but these infants may show no disturbance when picked up by a stranger. Other children with autism may be very passive, although less resistant to efforts by others to interact. However, they do not initiate social interaction themselves. Still others may attempt to engage with adults and peers, but in ways that strike others as inappropriate, or odd. In adolescence and adulthood, some of the higherfunctioning individuals with autistic disorders may appear overly formal and polite. They may react with little spontaneity, as if social interaction doesn39。 此次設(shè)計(jì)也讓我明白了思路即出路，有什么不懂不明白的地方要及時(shí)請教或上網(wǎng)查詢，只要認(rèn)真鉆研，動(dòng)腦思考，動(dòng)手實(shí)踐，就沒有弄不懂的知識(shí)，收獲頗豐。通過本次課程設(shè)計(jì)，讓我對單片機(jī)有了進(jìn)一步的熟悉和了解， 從理論到實(shí)踐，在這段日子里，可以說得是苦多于甜，但是可以學(xué)到很多很多的東西，同時(shí)不僅可以鞏固了以前所學(xué)過的知識(shí)，而且學(xué)到了很多在書本上所沒有學(xué)到過的知識(shí)。 } } proteus/keil仿真圖 電子密碼鎖開機(jī)仿真結(jié)果 電子密碼鎖修改密碼仿真結(jié)果 17 使用單片機(jī)的制作的電子密碼鎖具有軟硬件設(shè)計(jì)簡單，易于開發(fā)，成本較低，安全可靠，操作方便等特點(diǎn)，可應(yīng)用于住宅、辦公室的保險(xiǎn)箱及檔案柜等需要防盜的場所，有一點(diǎn)的實(shí)用性。i++){Delay10ms()。 for(i=0。} } 16 j=0。k5。} LED2=1。k5。i++) { LED2=0。 if(j==3) { for(i=0。} } }while(1)。i100。 } 15 else //修改密碼不成功，重新修改 { repeat()。 x=ReadB(iic,0x50,6)。 x=SendB(iic,0x50,6)。i++){Delay10ms()。 //修改密碼成功 for(i=0。amp。amp。amp。amp。amp。 press(iic)。 press(key)。} continue。i100。 14 unlock()。dat!=0x02)。 }while(dat!=0x01amp。 //鍵入 1或 2繼續(xù)執(zhí)行下面語句，否則等待 while(P3==0xf0)。(key[5]==iic[5])) //密碼比較 ,若密碼正確責(zé)進(jìn)入系統(tǒng)，若密碼不正確則顯示密碼錯(cuò)誤，重新輸入密碼 { true()。(key[4]==iic[4])amp。(key[3]==iic[3])amp。(key[2]==iic[2])amp。(key[1]==iic[1])amp。 if((key[0]==iic[0])amp。 System()。 }while(dat!=0x0b)。 while(P3==0xf0)。i++){Delay10ms()。 // for(i=0。 } //首先從 IIC 器件中讀出密碼以供下面輸入密碼進(jìn)行比較 x=ReadB(iic,0x50,6)。 if(INIT==0) //密碼初始化 { x=SendB(iic,0x50,6)。 SOUND=0。 LED1=1。 uchar i=0,j=0,k。k)。j) for(k=248。i) for(j=4。 for(i=5。 }while(dat!=0x0b)。 //鍵入 Enter 鍵盤繼續(xù)執(zhí)行下面語句，否則等待 while(P3==0xf0)。 star_12864(star,0x05,56)。(dat!=0x0b)) 11 { *s=dat。 if((dat!=0x0a)amp。 //保存第六位密碼 while(P3==0xf0)。 } s++。 Left()。amp。 dat=key_scan()。 //************************************************** P3=0xf0。 star_12864(star,0x05,40)。(dat!=0x0b)) { *s=dat。 10 if((dat!=0x0